What is true about ribosomes?
1. The prokaryotic ribosomes are 80 S, where S stands for sedimentation coefficient
2. These are composed of ribonucleic acid and proteins
3. These are found only in eukaryotic cells
4. These are self-splicing introns of some RNAs
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySelect the correct statement from the following regarding cell membrane.
1. Na+ and K ions move across cell membrane by passive transport
2. Proteins make up 60 to 70% of the cell membrane
3. Lipids are arranged in a bilayer with polar heads towards the inner part
4. Fluid mosaic model of cell membrane was proposed by Singer and Nicolson
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyImportant site for formation of glycoproteins and glycolipids is
1. Golgi apparatus
2. plastid
3. Lysosome
4. vacuole
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich one of the following also act as a ribozyme in a bacterial cell?
1. snRNA
2. hn RNA
3. 23 S rRNA
4. 5 S rRNA
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn eubacteria, a cellular component that resembles eukaryotic cells is
1. nucleus
2. ribosomes
3. cell wall
4. plasma membrane
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyPeptide synthesis inside a cell takes place in
1. mitochondria
2. chromoplast
3. ribosomes
4. chloroplast
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich one of the following structures between two adjacent cells is an effective transport
pathway?
1. Plasmodesmata
2. Plastoquinones
3. Endoplasmic rcticulum
4. Plasmalemma
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich one of the following has its own DNA?
1. Mitochondria
2. Dictyosome
3. Lysosome
4. Peroxisome
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe main arena of various types of activities of a cell is
1. plasma membrane
2. mitochondrion
3. cytoplasm
4. nucleus
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe plasma membrane consists mainly of
1. phospholipids embedded in a protein bilayer
2. proteins embedded in a phospholipid bilayer
3. proteins embedded in a polymer of glucose molecules
4. proteins embedded in a carbohydrate bilayer
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology